L. Ingalls No.1
Key Takeaway
L. Ingalls No.1 is classified as low hazard in South Dakota. It was completed in 1942 and is 84 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 15 ft (taller than 11.1% in SD) |
| Dam Length | 445 ft |
| Dam Type | Earth |
| Max Storage | 112 acre-ft |
| Normal Storage | 55 acre-ft |
| Max Discharge | 2,000 cfs |
| Year Completed | 1942 (84 years old) |
| NID ID | SD00373 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
LAWRENCE INGALLS
Private
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Low Hazard 23 ftFrequently Asked Questions
What is the hazard classification of L. Ingalls No.1?
L. Ingalls No.1 is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates L. Ingalls No.1?
L. Ingalls No.1 is owned by LAWRENCE INGALLS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was L. Ingalls No.1 built?
L. Ingalls No.1 was completed in 1942, making it 84 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of L. Ingalls No.1?
L. Ingalls No.1 serves the following purposes: Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is L. Ingalls No.1?
L. Ingalls No.1 has a dam height of 15 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.